Innodb cluster- unable to add new instance.

[Chaitanya Tondlekar]

I am trying to evaluate Innodb cluster on Ubuntu 16.04 EC2 instance within same region.

Cluster has been created successfully but while adding new instance to cluster it give below error.

Cluster.addInstance: WARNING: Not running locally on the server and can not access its error log.
ERROR:
Group Replication join failed.
ERROR: Error joining instance to cluster: 'x.x.x.x:3306' - Query failed. MySQL Error (3092): The server is not configured properly to be an active member of the group. Please see more details on error log.. Query: START group_replication (RuntimeError).

While checking the error log, i found :

[ERROR] Plugin group_replication reported: '[GCS] Error on opening a connection to x.x.x.x:13306 on local port: 13306.'
2018-03-08T12:16:28.531931Z 0 [Note] Plugin group_replication reported: 'connecting to x.x.x.x 13306'
2018-03-08T12:16:28.532763Z 0 [Note] Plugin group_replication reported: 'client connected to x.x.x.x.x 13306 fd 88'
2018-03-08T12:16:28.532816Z 0 [Note] Plugin group_replication reported: 'Trying to connect using SSL.'
2018-03-08T12:16:28.632234Z 0 [Note] Plugin group_replication reported: 'Error connecting using SSL 2000114 114.'

I have already opened 13306 port also, as well as ufw service has been stopped.

Any help would be appreciated.